NASA Pioneer 10 & 11 plaque - original size, anodised aluminium

NASA Pioneer 10 & 11 plaque - original size, anodised aluminium - From Nasa Depot - The #1 Nasa Store In The Galaxy For NASA Hoodies | Nasa Shirts | Nasa Merch | And Science Gifts

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CARL SAGAN'S PIONEER 10 / 11 PLAQUE
Made from Gold anodised aluminium - not plastic !

Faithful replica of the plaque affixed to the Pioneer 10 & 11 space probes launched in 1972 & 73. The plaque was designed by Dr.Carl Sagan as a galactic "message in a bottle", which showed any inhabitants of other star systems who may come upon it when, from where and by what type of beings the craft had been launched.

The radiating lines represent the positions of 14 pulsars to indicate our sun as the home star of the launching civilisation.

The "I" symbols by the lines are binary numbers representing the frequencies of these pulsars at the time of lauch relative to that of the hydrogen atom shown at the upper left with a "I" unity symbol.

The hydrogen atom is thus used as a universal clock, the regular decrease in the frequencies of the pulsars will enable others to determine the time elapsed since launch.

The hydrogen atom is also used as a yardstick for sizing the human figures. The hydrogen wavelength, approx 8 inches, multiplied by the binary number representing "8" shown next to the woman gives her height at 64 inches.

The figures represent the kind of creatures (mankind) that created Pioneer.
The man's hand is raised in a gesture of goodwill. The two figures were deliberately not shown holding hands as this could be interpreted as one figure with two heads.

Across the bottom of the plaque are the planets, ranging outward from the sun, with the spacecraft's trajectory arcing away from the earth, passing Mars and Swinging by Jupiter.

The plaque is made to the original size of 9 x 6 1/2". Material is gold anodised aluminium, similar in appearance to the original.
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